Compact Mass Spectrometer High-Pressure Ionization
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Solution Overview
Problem
Conventional mass spectrometers are large, power-hungry, and require trained operators, limiting their portability and practicality for applications like on-the-spot chemical identification, and they are not designed to operate at higher gas pressures due to component limitations.
Innovation Solution
Compact mass spectrometers with a single mechanical pump operating at higher pressures (100 mTorr to 100 Torr) that include efficient ion sources and detectors, allowing for portable, low-power operation and providing information on chemical substance identity and hazards without the need for high-resolution mass spectra.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional mass spectrometers are used, then high measurement precision is achieved, but device complexity and power consumption increase
Solution Approach 1:
The patent extracts and eliminates unnecessary components from conventional mass spectrometers. By removing complex vacuum systems, multiple pumps, and sophisticated ion sources, the invention retains only the essential elements (ionization chamber, drift region, detector) needed for mass spectral analysis, thereby simplifying device complexity while preserving measurement precision
Solution Approach 2:
The patent employs simple, inexpensive components that can be easily replaced rather than complex, expensive, maintenance-intensive systems. The use of basic electrical discharge ionization, simple drift tubes, and straightforward detectors creates a system that is less complex and more practical for portable applications
2Measurement precision
If conventional mass spectrometers are used, then high measurement precision is achieved, but portability deteriorates
Solution Approach 1:
The patent removes heavy components such as large vacuum pumps, complex mechanical systems, and extensive support infrastructure from conventional mass spectrometers. By retaining only the essential functional elements, the instrument weight is dramatically reduced while maintaining sufficient mass spectral resolution for practical applications
Solution Approach 2:
The patent changes the operational parameters of the mass spectrometer to function at higher gas pressures (avoiding the need for high vacuum systems), which enables the use of simpler, lighter components. This parameter change fundamentally alters the system's physical requirements, allowing for portable deployment
3Measurement precision
If conventional mass spectrometers are used, then high measurement precision is achieved, but ease of operation deteriorates
Solution Approach 1:
The patent removes the need for specialized operational procedures and complex sample preparation steps by using direct electrical discharge ionization of ambient gases. The simplified system requires minimal operator intervention and interpretation, making it accessible to users without specialized mass spectrometry training while maintaining adequate measurement precision
4Weight of moving object
If higher gas pressures are used, then portability is improved, but device complexity increases
Solution Approach 1:
The patent extracts and eliminates complex pressure control systems, vacuum pumps, and sealed chamber requirements by operating directly at ambient or elevated gas pressures. This removal of complex pressure management infrastructure enables portability without proportionally increasing device complexity
Solution Approach 2:
The patent fundamentally changes the pressure parameter from the conventional low-vacuum regime to atmospheric or elevated pressure operation. This parameter change eliminates the need for complex vacuum systems while the simplicity of the open or loosely sealed design prevents proportional increases in overall device complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The compact design enables portable, low-power operation while maintaining sufficient resolution for identifying chemical substances, making them suitable for applications like security scanning and medical diagnostics without requiring advanced training to interpret results.
Implementation Method 1
molecules or particles are excited or ionized, and these excited species often break down to form ions
Implementation Method 2
the gas pressure regulation system is configured to maintain a gas pressure of between 100 mTorr and 100 Torr in at least two of the ion source, the ion trap, and the ion detector
Data Source
AI summary
Mass spectrometers and methods for measuring information about samples using mass spectrometry are disclosed.